http://lod.bco-dmo.org/id/dataset/933292
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2024-07-18
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Average nitrate d15N values from the upper 1000 meters of the water column at four stations sampled in the Eastern Tropical North Pacific on R/V Sally Ride cruise SR2113 in December 2021
2024-09-13
publication
2024-09-13
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2024-09-13
publication
https://doi.org/10.26008/1912/bco-dmo.933292.1
Xingchen Wang
Boston College
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Landry, K., Wang, X. (2024) Average nitrate d15N values from the upper 1000 meters of the water column at four stations sampled in the Eastern Tropical North Pacific on R/V Sally Ride cruise SR2113 in December 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-09-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.933292.1 [access date]
Water Column Nitrate d15N Cocos Ridge Upper 1000m Dataset Description: <p>Data were collected on the NSF-funded 2021 "CDISP" cruise on R/V Sally Ride (SR2113). Analyses of the samples presented in this dataset were funded through Boston College.</p> Methods and Sampling: <p>Water samples were collected directly from the CTD Niskin bottles and filtered through 0.2-micrometer (um) PVDF syringe filters. Samples were collected from approximately 24 depths throughout the water column ranging from 7 to 2900 meters (m), with the shallowest depths being sampled first to avoid nitrate contamination from deeper, higher nitrate samples. The samples were collected in pre-cleaned acid-washed 30-milliliter (mL) HDPE bottles. The bottles and caps were rinsed three times with the sample water. The syringe was rinsed three times before attaching the PVDF syringe filter and, once attached to the syringe, 10 mL of sample water was used to rinse the filter before filling the sample bottles. Once filled, sample bottles were labeled and parafilmed. Samples were immediately frozen on the ship and continued to be frozen until analysis.</p>
<p>Nitrate/nitrite in seawater were quantitatively converted into nitrous oxide using the denitrifier method (Sigman et al., 2001; Weigand et al., 2016). The isotopic composition of the resulting nitrous oxide was analyzed on a custom gas bench system coupled to a Delta V Plus isotope ratio mass spectrometer.</p>
Funding provided by Boston College () Award Number: BC internal award
completed
Xingchen Wang
Boston College
609-937-2536
Department of Earth and Environmental Sciences
Chestnut Hill
MA
02467
USA
xingchen.wang@bc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Station_ID
Depth_m
WC_NO3
WC_d15N
WC_d15N_1sd
Latitude
Longitude
Date
Delta V Plus isotope ratio mass spectrometer
24-bottle Niskin CTD rosette
theme
None, User defined
sample identification
depth
Nitrate
d15N
longitude
date
featureType
BCO-DMO Standard Parameters
Isotope-ratio Mass Spectrometer
Niskin bottle
instrument
BCO-DMO Standard Instruments
SR2113
service
Deployment Activity
Cocos Ridge, Eastern Equatorial Pacific
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Collaborative Research: New approaches to study calcium carbonate dissolution on the sea floor and its impact on paleo-proxy interpretations
https://osprey.bco-dmo.org/project/917871
Collaborative Research: New approaches to study calcium carbonate dissolution on the sea floor and its impact on paleo-proxy interpretations
<p><em>NSF Award Abstract:</em><br />
The uptake of anthropogenic CO2 by the ocean will eventually be mitigated by the dissolution of CaCO3 on the sea floor. Dissolution is an important component of the carbon cycle in models used for climate projections though the relative importance of where it occurs (water column versus sediments) and the rates and processes involved are not fully understood. This ambitious field and laboratory study is designed to advance our knowledge of the important factors that control carbonate dissolution/ preservation in deep ocean sediments. Using a novel tracer approach and multiple in situ sampling strategies, the project will investigate sea floor dissolution rates, their kinetic controlling factors, the depth in sediments at which dissolution occurs, the role that oxidation of particulate organic carbon plays, and the ramifications of solid phase alteration for the use of geochemically-based paleoceanographic proxies. The project will foster further development of benthic lander technology and yield key information relating sea floor conditions to carbonate dissolution rate, thereby helping to constrain the rate at which the ocean can neutralize the impacts of ocean acidification. Graduate and undergraduate students will be trained and the research team will use film and animation to bring this work to a broader audience through a collaboration with the Los Angeles Natural History Museum.</p>
<p>The research team has developed a new approach to quantify calcium carbonate dissolution rates based on 13-C labeled carbonate substrates, a technique which is significantly more sensitive than traditional approaches based on alkalinity and/or calcium measurements. This has opened a range of new opportunities and insights into the governing mechanisms and rates of calcium carbonate dissolution, a challenging and long-standing geochemical problem. Carbonate dissolution rates on the sea floor will be directly assessed by benthic chamber flux measurements of alkalinity and calcium as well as pore water models of TCO2 and alkalinity and their isotopic composition. The potential impacts of organic carbon remineralization will be measured through oxygen and nutrient flux determinations, pore water gradients and modeling. Labeled 13C-enriched calcite will serve as a tracer of near surface dissolution processes when added to benthic chambers and of down-core dissolution processes using 13C-labeled rods inserted into the sediment column. These in situ experiments of labeled carbonate dissolution will be the first of their kind. To complement these measurements, the team will continue development of a rhizon-based pore water sampler that works on a multi-corer at all ocean depths. Field experiments will be conducted at sea at 4-6 sites in a transect through water column supersaturation to undersaturation between Panama and the Galapagos. Dissolution rate measurements, coupled with analyses of cation/Ca ratios in CaCO3 foraminiferal shells will help calibrate the impact of dissolution on paleo-proxy interpretations. Further, analyses of sediment calcite and aragonite fractions will help explain net dissolution and sediment response with time. The results from this study should help to better parameterize sediment variables in ocean-climate models (GCMs), which has important implications for predicting the consequences of ocean acidification and the modeling of paleoceanographic records. The methodologies and new techniques will surely be adopted by other researchers, therefore impacting the larger geochemical community.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
CDISP 2021
largerWorkCitation
project
eng; USA
oceans
Cocos Ridge, Eastern Equatorial Pacific
-88.261
-86.696
5.9596
6.7849
2021-12-02
2021-12-14
Cocos Ridge, Eastern Equatorial Pacific
0
BCO-DMO catalogue of parameters from Average nitrate d15N values from the upper 1000 meters of the water column at four stations sampled in the Eastern Tropical North Pacific on R/V Sally Ride cruise SR2113 in December 2021
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/936401.rdf
Name: Station_ID
Units: unitless
Description: <p>Cocos Ridge station number + cast number + Niskin bottle number</p>
http://lod.bco-dmo.org/id/dataset-parameter/936402.rdf
Name: Depth_m
Units: meters (m)
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/936403.rdf
Name: WC_NO3
Units: micromoles per kilogram (umol/kg)
Description: <p>Nitrate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/936404.rdf
Name: WC_d15N
Units: permille vs air
Description: <p>Averaged d15N in permille vs air. Blank/empty values in this column mean water was not collected from this specific bottle.</p>
http://lod.bco-dmo.org/id/dataset-parameter/936405.rdf
Name: WC_d15N_1sd
Units: permille vs air
Description: <p>Standard deviation of measurements for samples analyzed with more than one run</p>
http://lod.bco-dmo.org/id/dataset-parameter/936406.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/936407.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude of sample collection; negative values = West</p>
http://lod.bco-dmo.org/id/dataset-parameter/936408.rdf
Name: Date
Units: unitless
Description: <p>Date of sample collection</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2836
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/1a6e9b37-e44e-4268-85e8-7b46ef45df86/content
download
https://doi.org/10.26008/1912/bco-dmo.933292.1
download
onLine
dataset
<p>Water samples were collected directly from the CTD Niskin bottles and filtered through 0.2-micrometer (um) PVDF syringe filters. Samples were collected from approximately 24 depths throughout the water column ranging from 7 to 2900 meters (m), with the shallowest depths being sampled first to avoid nitrate contamination from deeper, higher nitrate samples. The samples were collected in pre-cleaned acid-washed 30-milliliter (mL) HDPE bottles. The bottles and caps were rinsed three times with the sample water. The syringe was rinsed three times before attaching the PVDF syringe filter and, once attached to the syringe, 10 mL of sample water was used to rinse the filter before filling the sample bottles. Once filled, sample bottles were labeled and parafilmed. Samples were immediately frozen on the ship and continued to be frozen until analysis.</p>
<p>Nitrate/nitrite in seawater were quantitatively converted into nitrous oxide using the denitrifier method (Sigman et al., 2001; Weigand et al., 2016). The isotopic composition of the resulting nitrous oxide was analyzed on a custom gas bench system coupled to a Delta V Plus isotope ratio mass spectrometer.</p>
Specified by the Principal Investigator(s)
<p>The data are processed and corrected using nitrate isotope standards IAEA NO3 and USGS34.</p>
Specified by the Principal Investigator(s)
- Imported original file "CCR_BCODMO_FINAL.xlsx" into the BCO-DMO system.
- Marked "nd" as a missing data value (missing data are empty/blank in the final CSV file).
- Converted the date column to YYYY-MM-DD format.
- Renamed fields to comply with BCO-DMO naming conventions.
- Saved the final file as "933292_v1_water_column_nitrate_d15n_cocos_ridge.csv".
Specified by BCO-DMO Data Managers
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Delta V Plus isotope ratio mass spectrometer
Delta V Plus isotope ratio mass spectrometer
PI Supplied Instrument Name: Delta V Plus isotope ratio mass spectrometer PI Supplied Instrument Description:The isotopic composition of the resulting nitrous oxide was analyzed on a custom gas bench system coupled to a Delta V Plus isotope ratio mass spectrometer. Instrument Name: Isotope-ratio Mass Spectrometer Instrument Short Name:IR Mass Spec; IRMS Instrument Description: The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
24-bottle Niskin CTD rosette
24-bottle Niskin CTD rosette
PI Supplied Instrument Name: 24-bottle Niskin CTD rosette Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
Cruise: SR2113
SR2113
R/V Sally Ride
Community Standard Description
International Council for the Exploration of the Sea
R/V Sally Ride
vessel
SR2113
Jess F. Adkins
California Institute of Technology
R/V Sally Ride
Community Standard Description
International Council for the Exploration of the Sea
R/V Sally Ride
vessel